Optical Communication - Study Mode
[#106] In increasing order of spectral width of three optical sources are
Correct Answer
(B) Semiconductor laser, gas laser, LED
[#107] What is the numerical aperture of an optical fiber when its critical angle is 30°
Correct Answer
(A) 0.5
[#108] In a step index fibre the refractive index of core n 1 = 1.48 and that of cladding n 2 = 1.45. The numerical aperture of the fiber will be nearly:
Correct Answer
(A) 0.3
[#109] The high index contrast enables the PCF core to be reduced from around 8 μmin conventional fiber to . . . . . . . . .
Correct Answer
(A) Less than 1μm
[#110] Absorption losses due to atomic defects mainly include . . . . . . . .
Correct Answer
(B) Missing molecules, oxygen defects in glass